Steam and hot-water generator



{No Model.) 2 Sheets-Sheet 1.

W. G. HIGGINS. STEAM AND HOT WATER GENERATOR. No. 453,697. Patented June9,1891.

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(No Model.) 2 SheetsSl1eet 2. W. O. HIGGINS. STEAM AND HOT WATERGENERATOR.

No. 453,697. Patented June 9,1891.

NITED STATES PATENT OFFICE.

\VERTER C. HIGGINS, OF NORVICH, CONNECTICUT.

STEAM AND HOT-WATER GENERATOR.

SPECIFICATION forming part of Letters Patent No. 453,697, dated June 9,1891.

Application filed March 23, 1891. Serial No. 386,011. (No model.)

To whom it may concern:

Be it known that 1, WERTER O: HIGGINS, a citizen of the United States,residing at Norwich, in the county of New London and State ofConnecticut, have made certain new and useful Improvements in Steam andHotater Generators, which improvements are fully set forth and describedin the following specification, reference being had to the accompanyingtwo sheets of drawings, in which Figure 1 is a central verticalsectional view of a generator of my improved form. Figs. 2 and 3 arerespectively cross-sectional views of the same on lines .2 and an.

On the 26th day of August, 1890, Letters Patent No. 434,928 were issuedto me for certain improvements in the class of generators to which mypresent invention relates, and I therefore refer to the said earlierpatent for a detailed description of such generators.

I now seek by my present invention to simplify and cheapen somewhat theconstruction of this class of heaters without detracting in any degreefrom their practicability.

In my said earlier form of heater an outer shell was shown within andbymeans of which a jacket of hot air could be provided around thewater-jacketed fire-pot. This outer shell I have now dispensed with, andhave also made certain other valuable changes whereby an indirect draftis cheaply and effectively pror'ided.

Referring to the drawings, 10 denotes the inner wall of the generator,within which is the fire-pot and combustion-chamber, and 11 denotes theouter shell, corresponding to the intermediate shell of the generator ofmy patout, No. 434,928, above referred to. Between walls 10 and 11 is awater-space, as shown, and suspended within the eombustion-chamber is aglobular water-section 12, having a series of radiating-pipes 13,connecting at their ends with the water-space between the walls 10 and11, as in said earlierpatent.

14 denotes a dome which may be used for steam or water, said dome beingconnected with the water-jacket surrounding the combustion-chamber by aseries of pipes 15, of which four are here shown; but any desired numbermay be provided. Suitable outlet or delivery pipes 16 lead from dome 14.Be-

tween said dome and the upper plate 17 of wall 12 is a tubular section18, whose lower end is formed with an annular interior rabbet that mayfit over a corresponding rib 19 on the plate 17, as best illustrated inFig. 1 of the drawings. The upper end of the tubular section 18 is heldagainst displacement when the parts are assembled by the convex lowerwall of dome 14, which enters and closes the otherwise open upper end ofsection 18. The lower end of said section is connected with the centraldraftopening leading upward from the combustion-chamber. Surrounding theopen space between dome 14 and the plate 17 is a jacket 20, madepreferably of segments of a circle, one of which is formed with a collar21 to receive a smoke-pipe.

Leading outward from one side of the tubular section 18 is an opening22, through which smoke and other products of combustion may pass to theopen space between dome 14 and plate 17, and finally outward through thesmokepipe. Such products are, however, checked and prevented frompassing directly outward by a vertical deflector-plate 23, which fitssnugly between the plate 17 and the dome, as clearly shown in Figs. 1and 3. Said deflector-plate is preferably located immediately at oneside of the smoke-pipe collar 21, and reaches thence to one side of theopening 22 in the tubular section 18. \Vhen the smoke, &c., passesoutward through opening 22, it is prevented from finding a direct exitto and through the smoke-pipe by reason of the intervening plate 23, andis caused to pass entirely around the section 18, as indicated by thearrows of Fig. 3, before it can reach said smoke-pipe, thus providing anindirect draft. This system of indirect draft usedin connection with theglobular water-chamber12, suspended within the combust-ion-chamber,renders it possible to obtain in a simple manner the best caloricresults from the burning gases of the said combustion-chamber.

The general form and arrangement of the several sections of which thegenerator is formed are such that it is comparatively easy and inexpensive to assemble said sections and to make water or steam tightjoints.

Having described my invention, I claim- 1. In a generator of the classreferred to, in

ICO

fire-pot and provided with pipe connections,

as set forth, an outer shell surrounding the fire-pot, a dome supportedon Water-legs above the generator proper, providing hot-air spacebetween the dome and generator, a tubular section (with lateral opening)fitting between the dome and the draft-opening of the firepot, and aradial plate 23 betweenrthe said tubular section and the outer wall,said plate being located at one side of the smoke-exit, as and for thepurpose specified.

\VERTER O. HIGGINS.

\Vitnesses:

A. HAMMETT, r FRANK H. ALLEN.

